Research on corrective feedback (CF) and language teachers' beliefs and practices on the provision of CF has been mainly limited to learners' non-target-like use of grammar, vocabulary, pronunciation, and spelling (non-formulaic forms). Consequently, learners' non-target-like use of formulaic sequences, that is, collocations, idioms, lexical bundles, and compounds (formulaic forms), has received scant attention in CF and teacher cognition studies. This study examined three Iranian English as a foreign language teachers' stated beliefs and practices on treating learners' non-target-like use of formulaic vs. non-formulaic forms through incidental reactive focus on form. The teachers' stated beliefs about the provision of CF for learners' non-target-like use of formulaic vs. non-formulaic forms were elicited through a questionnaire and stimulated recall interviews, and their practices were examined by drawing on 36 hours of audio- and video-recorded teacher-learner interactions in primarily communicative activities. The findings indicated that while learners' non-target-like use of formulaic forms outnumbered that of non-formulaic ones in teacher-learner interactions, teachers provided CF, by far, more frequently for non-target non-formulaic forms than formulaic ones. The teachers were not always aware of the amount of CF they tended to provide for learners' non-target-like use of different linguistic targets. The (in)consistencies between the teachers' CF beliefs and CF provision for learners' non-target-like use of formulaic vs. non-formulaic forms are discussed.